Luminaire



FIG. 1 is a front perspective view showing the new ornamental design of a luminaire;

FIG. 2 is a front view thereof;

FIG. 3 is a rear view thereof;

FIG. 4 is right side view thereof;

FIG. 5 is left side view thereof;

FIG. 6 is top view thereof; and,

FIG. 7 is bottom view thereof.

The broken lines showing phantom views of the wire, coupling and hardware form no part of the claimed design. 

CLAIM The ornamental design for a luminaire, as shown and described. 